How much does a 3.00 to 4.99ct G I1 natural princess diamond cost?

As of October 2026, 3.00 to 4.99ct G I1 natural princess diamonds typically cost £20,007 GBP to £33,297 GBP, with a median price of £23,426 GBP. There are currently 3 diamonds matching this specification available across retailers.

Where can I find the best price on a G I1 princess diamond?

About 13% of these diamonds are available at multiple retailers, with an average price spread of 89%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G I1 Natural Princess

Quick answer

As of October 2026, there are 3 natural princess diamonds with G colour and I1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £20,007 GBP to £33,297 GBP, with a median of £23,426 GBP. At least 13 retailers stock this exact specification, and 13% of the stones appear at more than one of them, with an average price spread of 89%. Half of all listings fall between £3,649 GBP and £7,323 GBP per carat.

Three of the best scored stones at this specification right now:

3.09ct Princess G I1, IGI, grade B+, from £7,013 GBP

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Princess natural stones in the index: 2,158 USD per carat, +5.7% month on month. See the full index release

Figures come from current listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: October 2026

Available

Lowest Price

£7,013 GBP

Highest Price

£35,255 GBP

Average Price

£24,828 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

13.3%

Price Spread

89.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$5,484/ct

10th Percentile

$3,731

Median

$5,484

90th Percentile

$13,451

Score Distribution

12 diamonds scored across 2 quality tiers

Very Good

1 (8.3%)

Average

11 (91.7%)

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1